Agreed.... There aren't alot of amps out there that are as cheap and efficient as the EP2500. I guess it gets to a point when you go sealed, how much power the driver can take, and on the other side of the coin, you have to ask yourself, how much is enough.
I can vouch for the TC2000 that I level matched it and ended up turning the amp down to 3/4 gain and still have plenty of headroom available. So in effect you will never, ever breach the limits of what the TC3K is capable keeping it well within its limits, and never having to worry about compression with the EP2500. My point is that with more power and adding EQ to boost the low end will produce some scary linear results all the way down into the teens...
Boosting with EQ to raise the low end requires power, which gets exhausted quickly. The low BL of these drivers is great for small enclosures, which is why the maelstrom has me intrigued, I am hoping the SQ is as good as the TC's.
Are you using MDF or Baltic Birch....? What size box, and how much bracing are you using.... Its a fun build, sealed...
Here is a sweet little cut sheet, I changed around a bit for the TC2K's, but its a nice efficient use of a full 4x8 sheet. This one is for the 18" Maelstrom-X, my second TC2K is under way, and I will be adding more bracing this time around, as I feel its lacking, and I personally don't ever mind the extra weight, but it doesn't need much.
I would love to see your design layout, could you post it up here... Its nice comparing notes with ya....